Please listen to believing_isiah. You have to look at your long term goals. This will take a very long time and there's no guarantee of success. If he's just met someone else, he's feeling that euphoria of a new R. You have to be patient and wait for that to fade. Wat he says is right, as far as he's concerned you were divroced 4 months ago. Hell, that doesn't make it right, but you have to play according to his rules. Don't argue with him, it will just make him hang on to his beliefs more.
Just do one thing for me, ok? Before you do an anything, before you open your mouth, or write a text or email, just ask yourself this one simple question. Is this going to being him closer towards me, be neutral, or drive him further away. Don't do ANYTHING that won't bring him closer towards you.
Have you written down your R goals yet? Let us know what they are.
You cannot teach a man anything; you can only help him discover it in himself. Galileo Galilei